xref: /openbmc/linux/Documentation/ABI/removed/net_dma (revision e5451c8f8330e03ad3cfa16048b4daf961af434f)
1 What:		tcp_dma_copybreak sysctl
2 Date:		Removed in kernel v3.13
3 Contact:	Dan Williams <dan.j.williams@intel.com>
4 Description:
5 	Formerly the lower limit, in bytes, of the size of socket reads
6 	that will be offloaded to a DMA copy engine.  Removed due to
7 	coherency issues of the cpu potentially touching the buffers
8 	while dma is in flight.
9